62 lines
2.2 KiB
Python
62 lines
2.2 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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import os
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import monasca_setup.agent_config
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import monasca_setup.detection
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_LXC_PWD = '/var/lib/lxc'
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log = logging.getLogger(__name__)
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class LXC(monasca_setup.detection.Plugin):
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"""Detect if LXC is present on the host.
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LXC uses cgroup and namespaces to create a controlled and isolated
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environment. One can easily detect if lxc is installed on a machine,
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searching for /var/lib/lxc. But, if one uninstalls lxc, this dir must not
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be removed. THIS CAN NOT VERIFY ALL CONTAINERS (RUNNING AND STOPPED)
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WITHOUT ROOT ACCESS TO MONASCA-AGENT USER. Only running containers will be
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detected.
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To detect if any container is running, You can search if there are any
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folders in /sys/fs/cgroup/cpu/lxc/. Folders' names are the same as the
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running containers' names.
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"""
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def __init__(self, template_dir, overwrite=True, args=None):
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self.service_name = 'lxc'
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super(LXC, self).__init__(template_dir, overwrite, args)
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def _detect(self):
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"""Verify if there are container folder."""
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if os.path.exists(_LXC_PWD):
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self.available = True
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def build_config(self):
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config = monasca_setup.agent_config.Plugins()
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config['default'] = {'init_config': None,
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'instances': [
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{'container': 'all',
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'state': True,
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'cpu': True,
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'mem': True,
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'blkio': True,
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'net': True
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}]}
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return config
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def dependencies_installed(self):
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return True
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